Intergalactic Solar System vs Black hole finder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Intergalactic Solar System
Explore planets, moons, and countries in this space simulator mini-game. Learn astronomy and geography aligned with next-generation science standards. Discover the Milky Way galaxy and assess your knowledge through engaging gameplay.
- Planet and moon exploration
- Country geography learning
- Milky Way galaxy view
- Common Core aligned curriculum
- Proficiency assessment
- Engaging gameplay levels
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Intergalactic Education introduces Intergalactic Solar System, a mini-game that teaches about planets, moons, and countries. This space simulator lets you explore celestial bodies from the viewpoint of space itself. The latest edition adds the Milky Way as an observable galaxy. Intergalactic Solar System uses next generation science standards (Common Core aligned) astronomy and geography. (Follows standards ESS1.A, ESS1.B, and CCSS.ELA-LITERACY.RH.6-8.7) Try Intergalactic Solar System! Assess proficiency in Solar System knowledge according to educational standards. Rewarding levels of gameplay maintain engagement. You will forget you were doing astronomy and geography!
Black hole finder
Contribute to cutting-edge astronomical research by identifying potential black holes and rare elements. Sift through real-time telescope images to detect fleeting light signals from cosmic events and potentially earn co-authorship on scientific publications.
- Analyze real-time telescope images
- Detect light signals from cosmic events
- Contribute to scientific research
- Potential co-authorship on publications
- Learn about black holes and neutron star mergers
- Direct telescopes for additional measurements
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Welcome to the Black Hole Finder, an exciting citizen science project dedicated to discovering black holes, particularly those formed from the fusion of two neutron stars. You have the unique opportunity to contribute to this cutting-edge research from the comfort of your home, using your phone, tablet, or computer. Our app brings the cosmos to your fingertips. When two neutron stars merge, they create a powerful event, sending gravitational waves through space. These events are detected by our gravitational wave detectors, which alert us to potential black hole formations. Mergers of this kind not only create black holes but also give birth to rare Earth elements such as Iodine, Gold, and Cerium. All these elements, especially Iodine, play crucial roles in supporting life as we know it. In addition to gravitational waves, these cosmic collisions emit light signals. The chase is on to detect these signals with our trio of specially designed BlackGEM telescopes located in Chile. The catch is that the detectors only provide a general localization of the event and the light signals are fleeting. Therefore, we need to act quickly to capture these signals before they fade away after a few days or a week at most. That's where you come in! Using our app, you will sift through real-time images of the sky taken by our BlackGEM telescopes. You will help us spot these light signals, effectively identifying potential new black holes. Not only will you be possibly among the first to set eyes on the light from these celestial events, but with some training, you may also direct telescopes to take additional measurements of intriguing objects. Your contributions to science won't go unnoticed. Participants who make significant discoveries will be offered co-authorship on scientific publications that result from their findings. We also provide training and guidance to enrich your understanding of the cosmos. The Black Hole Finder project is not just about making significant scientific contributions. It's about engaging with the wonders of the universe, learning about the intricate processes that drive its dynamics, and having fun while doing it! So, join us on this thrilling journey of discovery and exploration. Download the Black Hole Finder app now and start your cosmic adventure!
Screenshots
Verdict
The clearest difference is in-app purchases: Black hole finder at none against Intergalactic Solar System's 1. Black hole finder also leads on update cadence (every 10 days vs monthly). Intergalactic Solar System's advantage is ratings volume (25 vs 7). On price, rating, review sentiment and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Intergalactic Solar System sells 1 one-off in-app purchase. Black hole finder asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.0 for Intergalactic Solar System against 4.1 for Black hole finder. Both are backed by a comparable volume of ratings — 25 and 7 respectively. Written reviews are what separate them: 70% of Intergalactic Solar System's written reviews are positive against 63% of Black hole finder's.
Intergalactic Solar System ships an update monthly, Black hole finder every 10 days. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.
| Parameter | Intergalactic Solar System | Black hole finder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (25 ratings) | 4.1 (7 ratings) — better |
| Positive reviews | 70.0% of reviews — better | 62.5% of reviews |
| Number of ratings | 25 — better | 7 |
| Update frequency | Monthly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 355 MB | 81 MB |
| Age rating | 4+ | 4+ |
| Developer | Intergalactic Education LLC | DDQ |
Customer experience
Intergalactic Solar System
Black hole finder
In-app purchases
Intergalactic Solar System
- Access to Full Game$3.99
Black hole finder
No in-app purchases
Questions
Is Intergalactic Solar System free?
Is Black hole finder free?
Which has better reviews, Intergalactic Solar System or Black hole finder?
Do Intergalactic Solar System or Black hole finder have ads?
Which is updated more often, Intergalactic Solar System or Black hole finder?
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